Ifconfig (DHCP?) configures two IPs in one IF

Guojun Jin gjin at ubicom.com
Thu Aug 5 19:19:12 UTC 2010

This problem comes  in 8.1-R. I have seen it before and  thought I filed a report but cannot find it.
I found one (bin/21292) for ifconfig, but it was for two NICs with a same IP. Now is a reversed case
One NIC has two IPs.

Here is the description:

Due to DHCP server down, I manually configured rl0 to for temporarily use.
In the middle of working, DHCP came back and assigned  another IP on the rl0, now NIC is down
due to two conflict IP addresses.

rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:40:f4:d1:23:9a
        inet netmask 0xffffff00 broadcast
        inet netmask 0xffffff00 broadcast
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active
plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500

I tried unplumb/delete rl0, but if does not  work.
Before the bug can be fixed, is any way to fix the IP without rebooting the machine?


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